Backup and recovery are a procedure of saving and making copies of data that can be used to secure data from losing, also called an operational recovery. Revival from a backup in general includes restores the information to the primary address or to the substitute position where it can be utilized instead of unrecalled or deteriorate data.
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Reasons for losing the data:
ACID Property Disturbance:
ACID stands for Atomicity, Consistency, Isolation, and Durability. If in any case this trait gets disturbed it will lose a complete database system.
Break down of system:
The system crash when the operating system suddenly stops working and halt. Sometimes information from memory also lost because of the smash into hardware.
Due to the logical errors in a program transaction may stop. The failures come because of the availability of deadlock into the system.
Malfunction in media:
Natural disasters are the main reason to break down the means of communication and it takes more time to get recovered than the other system or modes.
It happens because of the improper configuration between clients and server, that is the main source of connection amongst them.
Failure of disks:
The issues with hard disk and like the creation of inadequate parts, disk head collapse, and unavailability of the disk.